Small new update:
Added a notification system that appears when you obtain a new reward to unpack.
Added a countdown for the next drop.
Added 6 new achievements, requested by a crazy friend of mine.
Thank you for every valuable suggestion!
And thanks again for all the reports: I’m aware of an important bug affecting the Steam display of obtained inventory items, even though they appear correctly inside the game. I’m investigating the cause and will let you know as soon as possible.